The Throttle Body Spacer Debate
May 12th, 2009 No Comments »
On many automotive forums, questions abound about throttle body spacers and their potential to deliver serious performance gains. For an easy installation and relatively inexpensive part, it may seem like a no-brainer. However, many remain skeptical of the hype and denounce them as expensive paper weights.
Before we get into the debate, let's first describe how the throttle body works. The throttle body is part of the air intake system in a fuel injection engine. The throttle body regulates the amount of air that flows into the engine based on input from the accelerator. Throttle bodies are most often located between the air filter and intake manifold. The throttle body is also often attached or near the mass airflow sensor.